Method for herding sturgeons in lakes and reservoirs in saline-alkali waters on plateaus

Abstract

The invention provides a method for herding sturgeons in lakes and reservoirs in saline-alkali waters on the plateaus. The method comprises arrangement of lakes and reservoirs for herding type breeding of sturgeons, preparation of the sturgeons cultured by sturgeon fry culture and intensive breeding facilities, domesticating and feeding technology before sturgeon stocking and escape-proof net arrangement and catching methods. The method is characterized by selecting the lakes and reservoirs with flat bottoms, average depth of 3-4 meters, dead storage of more than 1 / 3 of waters area, waterweeds on more than 1 / 3 of area and benthos resources as the lakes and reservoirs for herding type breeding; throwing the sturgeons into the lakes and reservoirs when the water temperature is 10-12 DEG C in spring and autumn, ensuring the sturgeons to stop eating for one week before throwing the sturgeons into the lakes and reservoirs and carrying out feeding habit domestication with minced fish feeds prepared from silver carps and bighead carps or little fish for two weeks; and throwing compound feeds for the sturgeons into the deep water areas where the sturgeons haunt in June-August every year, centralizing the sturgeons in the lakes and reservoirs by zones with large purse nets when the sturgeons bred in the lakes and reservoirs are about 4-5kg respectively, catching the male sturgeons and continuously putting the female sturgeons back to the reservoirs to be bred until the gonads develop maturely.

Description

technical field [0001] The invention relates to a method for cultivating sturgeon in lakes and reservoirs in plateau saline-alkaline waters. Background technique [0002] There are many large and small lakes and reservoirs in the Northwest Plateau of my country (hereinafter referred to as lakes and reservoirs). The pH of the water is 8.35, the salinity is 1706.61mg / L, the alkalinity is 507.55mg / L, the hardness is 465.13mg / L, and the water type is Magnesium sulfate type III, most lakes and reservoirs become idle water bodies, and the water body benefits are low. In the early 1980s, the former Soviet Union adopted the method of grazing sturgeons in rivers, lakes, and reservoirs, and the sturgeon products they obtained earned 8 billion US dollars a year for the country. The lakes and reservoirs in the northwest plateau of my country have similar ecological environment conditions to the lakes and reservoirs stocking sturgeon in the former Soviet Union. The natural environmental ...

AI Technical Summary

Problems solved by technology

[0002] There are many large and small lakes and reservoirs in the Northwest Plateau of my country (hereinafter referred to as lakes and reservoirs). The pH of the water is 8.35, the salinity is 1706.61mg / L, the alkalinity is 507.55mg / L, the hardness is 465.13mg / L, and the water type is Magnesium sulfate type III, most lakes and reservoirs become idle water bodies, and the water body benefits are low